drbbc.c revision 1.11
1 /* $NetBSD: drbbc.c,v 1.11 2003/04/01 21:26:31 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Ignatios Souvatzis. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: drbbc.c,v 1.11 2003/04/01 21:26:31 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/systm.h> 46 47 #include <uvm/uvm_extern.h> 48 49 #if 0 50 #include <machine/psl.h> 51 #endif 52 #include <machine/cpu.h> 53 #include <amiga/amiga/device.h> 54 #include <amiga/amiga/custom.h> 55 #include <amiga/amiga/cia.h> 56 #include <amiga/amiga/drcustom.h> 57 #include <amiga/dev/rtc.h> 58 59 #include <dev/ic/ds.h> 60 61 int draco_ds_read_bit(void *); 62 void draco_ds_write_bit(void *, int); 63 void draco_ds_reset(void *); 64 65 void drbbc_attach(struct device *, struct device *, void *); 66 int drbbc_match(struct device *, struct cfdata *, void *); 67 68 int dracougettod(struct timeval *); 69 #ifdef __NOTYET__ 70 int dracousettod(struct timeval *); 71 #endif 72 73 struct drbbc_softc { 74 struct device sc_dev; 75 struct ds_handle sc_dsh; 76 }; 77 78 CFATTACH_DECL(drbbc, sizeof(struct drbbc_softc), 79 drbbc_match, drbbc_attach, NULL, NULL); 80 81 struct drbbc_softc *drbbc_sc; 82 83 int 84 drbbc_match(struct device *pdp, struct cfdata *cfp, void *auxp) 85 { 86 static int drbbc_matched = 0; 87 88 /* Allow only one instance. */ 89 if (!is_draco() || !matchname(auxp, "drbbc") || drbbc_matched) 90 return (0); 91 92 drbbc_matched = 1; 93 return (1); 94 } 95 96 void 97 drbbc_attach(struct device *pdp, struct device *dp, void *auxp) 98 { 99 int i; 100 struct drbbc_softc *sc; 101 u_int8_t rombuf[8]; 102 103 sc = (struct drbbc_softc *)dp; 104 105 sc->sc_dsh.ds_read_bit = draco_ds_read_bit; 106 sc->sc_dsh.ds_write_bit = draco_ds_write_bit; 107 sc->sc_dsh.ds_reset = draco_ds_reset; 108 sc->sc_dsh.ds_hw_handle = (void *)(DRCCADDR + DRIOCTLPG*PAGE_SIZE); 109 110 sc->sc_dsh.ds_reset(sc->sc_dsh.ds_hw_handle); 111 112 ds_write_byte(&sc->sc_dsh, DS_ROM_READ); 113 for (i=0; i<8; ++i) 114 rombuf[i] = ds_read_byte(&sc->sc_dsh); 115 116 hostid = (rombuf[3] << 24) + (rombuf[2] << 16) + 117 (rombuf[1] << 8) + rombuf[7]; 118 119 printf(": ROM %02x %02x%02x%02x%02x%02x%02x %02x (DraCo sernum %ld)\n", 120 rombuf[7], rombuf[6], rombuf[5], rombuf[4], 121 rombuf[3], rombuf[2], rombuf[1], rombuf[0], 122 hostid); 123 124 ugettod = dracougettod; 125 usettod = (void *)0; 126 drbbc_sc = sc; 127 } 128 129 int 130 draco_ds_read_bit(void *p) 131 { 132 struct drioct *draco_ioct; 133 134 draco_ioct = p; 135 136 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 137 138 draco_ioct->io_clockw1 = 0; 139 140 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 141 142 return (draco_ioct->io_status & DRSTAT_CLKDAT); 143 } 144 145 void 146 draco_ds_write_bit(void *p, int b) 147 { 148 struct drioct *draco_ioct; 149 150 draco_ioct = p; 151 152 while (draco_ioct->io_status & DRSTAT_CLKBUSY); 153 154 if (b) 155 draco_ioct->io_clockw1 = 0; 156 else 157 draco_ioct->io_clockw0 = 0; 158 } 159 160 void 161 draco_ds_reset(void *p) 162 { 163 struct drioct *draco_ioct; 164 165 draco_ioct = p; 166 167 draco_ioct->io_clockrst = 0; 168 } 169 170 int 171 dracougettod(struct timeval *tvp) 172 { 173 u_int32_t clkbuf; 174 u_int32_t usecs; 175 176 drbbc_sc->sc_dsh.ds_reset(drbbc_sc->sc_dsh.ds_hw_handle); 177 178 ds_write_byte(&drbbc_sc->sc_dsh, DS_ROM_SKIP); 179 180 ds_write_byte(&drbbc_sc->sc_dsh, DS_MEM_READ_MEMORY); 181 /* address of seconds/256: */ 182 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 183 ds_write_byte(&drbbc_sc->sc_dsh, 0x02); 184 185 usecs = (ds_read_byte(&drbbc_sc->sc_dsh) * 1000000) / 256; 186 clkbuf = ds_read_byte(&drbbc_sc->sc_dsh) 187 + (ds_read_byte(&drbbc_sc->sc_dsh)<<8) 188 + (ds_read_byte(&drbbc_sc->sc_dsh)<<16) 189 + (ds_read_byte(&drbbc_sc->sc_dsh)<<24); 190 191 /* BSD time is wr. 1.1.1970; AmigaOS time wrt. 1.1.1978 */ 192 193 clkbuf += (8*365 + 2) * 86400; 194 195 tvp->tv_sec = clkbuf; 196 tvp->tv_usec = usecs; 197 198 return (1); 199 } 200
Indexes created Mon Sep 22 13:09:51 GMT 2025